@jupyterlab/apputils/lib/movableSectionRegistry.js

JupyterLab - Application Utilities

// Copyright (c) Jupyter Development Team.
// Distributed under the terms of the Modified BSD License.
import { Signal } from '@lumino/signaling';
/**
 * Source and target panels register themselves here so that generic
 * section-moving commands can discover them.
 */
export class MovableSectionRegistry {
    constructor() {
        this._sources = new Map();
        this._targets = new Map();
        this._sourcePanelRegistered = new Signal(this);
        this._targetPanelRegistered = new Signal(this);
    }
    get sourcePanelRegistered() {
        return this._sourcePanelRegistered;
    }
    get targetPanelRegistered() {
        return this._targetPanelRegistered;
    }
    registerSource(id, label, sidebar) {
        this._sources.set(id, { label, sidebar });
        this._sourcePanelRegistered.emit({ id, label, sidebar });
    }
    registerTarget(id, label, panel) {
        this._targets.set(id, { label, panel });
        this._targetPanelRegistered.emit({ id, label, panel });
    }
    getSources() {
        return this._sources;
    }
    getTargets() {
        return this._targets;
    }
}
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